Telephone-receiver.



TELEPHONE RECEIVER.

APILIGATIONTILED SEPT. 5, 1908.

Patented, Ang. 9, 191.0A

2 SHEETS-SHEET 1.

' Tooll'whm'i mayeminem:3 V

w. NICHOLS Assiettes fro' saro KATHEEINENIQQLS "Be it known tha't'we, Klimmen@ NICHOLS and IsAAo'W. NICHOLS, bothcitizensof the United States,'re'siding at Newarlguinthel countyv of Vand State fof 'New 'i Jersey,

Y have invented certainfiiiprovemeiits in TelephonefRec'ei-vers, ofr which the following is a speci'cation. l l

This invention relates'tocertain improve;

ments` initelepho'ne receivers, and has for 'itsl ob]eet,1npart, to provide a:devicel"of; this general character of a simple and Icomparatively inexpensive nature, having a novel ar-i rangement of sound conveying means Wherebythe transmission of theireproduce'd sounds to'the ear lis" facilitated insuch amanneras to permit 4the same to be heard .with greaterf 'distinctness than under ordinary conditions,` and 'in part, to. provide means of an improvedv andv simplified `construction forsupporting the' receiver during '-use, so as to relieve the hand orhands ofthe` subscriber and permit them -tobe'freely employed for Writing or other purposes. A-

f The invention f oon'sists in rvcertain novel features of the construction, Vand VCombination-S and. arrangements; iof :the several parts ofthe improved telephone receiver, whereby the better understood, yive-,have illustrated the saine in theaccom-panyi ng,drawings inafter fully'setlforth.4 i

The novel features ofl the invention Will` be c'arefullydefined in the claims, i i v 'certain important advantages are attained, and the deviceis rendered simpler, less expensive, land otherwise vbetter adapted and alias Will-: be'lfiere more convenient for use,

VIn order that" our' improvements may be Whereinf- 1 f @Figure 1;- isa front elevationshowing aV telephone ,of ordinary construction, provided With areceiver constructed according to our vinventionrandfin position foniise; Fig. 2 is a sidevievvofthe partsillustrated in Fig. 1"; FigLS isapliview., showing, lmodified construction comprised in 'Quranin elevation, 'a

vention; Fig. 4l is .an enlarged fragmentary sectionalviewtaken vaxially througlnthe ear piece ofthe hand ,telephone and showing our improvements .appliedj thereto; Fig.` 5 lis an enlarged sectional detaiLview taken throughthe connected earfpiece of A the haiid t.e le. phone,and illustrating the means for retain-' ing vthe `same `uponthe ear; Fig.` is an-inner side orfface'fiew ofthe ear-piece shown in Fig. 1 5; Fig. a viewsimila'r to Fig. 6,

`Kirriilimita N'IoHoLs nim IsAAclW/Q NioHoIiS flivfriiiriiiil, N W

ragusa,litigi-effigie' Application yfiled September 5,-1908.f Serial No. 451,808, 1 i

piece comprised in our f present .,invention;

yFig-.18 isa s ectinaluvietv 'somewhat similar Itoy Fig: 4; butshowing a:V modified formation yent invention, and'.` Fig. 9 -is aN-iew somel'vvhat similar to YFigs-. l-andx'tl, but illustrating still f 'another modified @formation of, the f handtelephone comprisedI in? our present inventioni I 'but'shovvingamodifedformation 'ofthe ear- Y I'of the-hand'telephonecomprised in the -presf As shown in these views l represents the i pedestal of .a ldesk telephonefset, ,having an enlarged base and yprovided-With ahooklever in theusual way, andi. representst-he receiver, herein shown as made in theordifl nary form, being adapted lto;ghe,-,supportedA when not in use uponthe hookleveig and having; ya body portion provided Eavith an.` enlarged or bell shaped 1end-portiOIlf 5,

external screw-threads adaptedl tfbellm having gaged by a corresponding screw-thread produced;y internally t iii a v.removable ,earpielce y6, of a ivellf known kind,y having central .aperture 7- the5valls yof which arefmade to vdiverge outwardly,A as shown 8, onythe drawings. f l.'

.i 10,. represents.; u intermediate l vf s'ection,

adapted tobe fitted vupon" the'belllshaped end ernal `s rew threads as shown atlll'for engagement' with the `external VsClQWthreads the 'bell shaped end portion fof, the receiver, While its'jopposite. end is externally screwflirt-iaded:v "as" Shawn. et f 1.3.folyengese-ment. with the i11- ternal` screw threads` sofi. the "ea'rx p ieoe 6, 4so that when the intermediate" section 10, '11s" 1n position, 'sfuch screwfthread'sl afford ai secure connectionfofthe saine" with theboilyfportionI ofthe receiver', and ivitlil thev 'ear piece 6, as

of employment in connection` with? hand telephonesoffthe k'ind'rord'iiarily infuse.'

, [Within the fintermediate#genion/5110, as

'shown iii"Fig lproduced-'fadiaphragm' advantage is annee ear-piece.

Adjacent to its opposite end, the

'intermediate section 10 has` an annular.v

. to. the, diaphragm 18 is -nular rim or shoulder shoulder 16 produced around its interior cavity, and serving a`s an abutment against which is engaged the edge portion of a re movable A'diaphragm 17, extended across the interior of thesaidv section .closely adjacent to the diaphragm 18 Aof the'receiver,.and also sembled, for clamping engagement upon'the Y 'margin of said diaphragm 18 in such amanner as to retain the parts in secure posit-ion and prevent contact of the diaphragm 17 ofthe intermediate section upon the receiver` diaphragm 18, and said diaphragms 14 and '17y of the intermediate section are spaced apart, as

clearly shown in Fig.`4, to produce between them an enlarged space or chamber 20, to which the sound Waves produced by the receiver diaphragm 18 are admitted by way of the centralaperture 19 and from which such 'waves are dischai" ed to the ear through the apertures 15 an 7 above referred to.

- By.' this construction, a much greater volf ume. of sound 1s produced than is possible with' the constructions heretofore pmployed,

' which is produced a passage Avv'50a-eating with the said flexible `tube 23.

` auxiliary ear piece y wherein plication of the sound waves are causedto pass throughl'restricfed passages in such a manner'that a great proportion of the sound is destroyed or lost. The structure is also of sucha.nature as. to permit of applying the intermediate section to receivers already ini use, 411o-change beingp required except the removal of the Aear-piece 6 and its applicationto the intermediate section, and the apthe said intermediate section to the receiver body portion in the place of said ear piece.

At' one side, the intermediate section 10 is provided with a projecting lug 21 through 22 communichamber or space 20 Within said section, and 28 represents a flexible tube, one end of which has a nipple 24 engaged in the outer .end 'of said passage- 22 1n such a manner that a portion of the sound within said chamber 20 is conveyed by way of said passage 22 to and through The end of the flexible tube 23 opposite to the nipple 24 is providedvvith a similar nipple25 which has connectiomwith a chambered projection 26 at the rear side of a-n 27, hereinshown as made 1n a shape toconform'generally to the ear of the subscriber and provided with anaperture through which the ear is to be inserted',

particularly desirable phragm 18 .tion offthe soun and with an overhanging flange28, encir- Icling said aperture and adapted to afford a secure connection With the ear when the auxiliary ear piece is in positionfor use,

4so that said ear' piece may be supported 'in position Without requiring the use of the hand.

VBy this arrangement of the parts, the

sound from the receiver diaphragm is in.

,creased in volume and carriedfto both ears ofthe subscriber, so that the same may be heard with much greater distinctness than is lpossible under ordinary conditions. Furthermore, since the auxiliary vear adapted to be supported directly upon 'the ear of the subscriber, it Will be evident that one hand remains free so as to permit of being employed for Writing or other purposes, thereby aording a material advantage and convenience in the use of the telephone. It may be stated that While our improvements are well adapted for use in connect-ion with telephones upon local circuits, the device is for employment upon long distance lines by reason of the greater distinctness With which the reproduced sounds are audible.

.The ear piece 27 may desirable material, but the same'should, of course, be made as Ilight as possible in weight, .for whichy purpose -aluminium may be used in its construction. The flexible tube' shouldalso be of sufficient length to permit the hand telephone to be conveniently handled Without detaching the ear piecefrom the ear ofthe subscriber.

In Fig. 7 we have shown a modified formation of the auxiliary ear piece 27 where in the lower part of the same is'vcut away as shown at 29'for the sake of lightness, and also to avoid interference Withthe use of the device from the lobe ofthe ear.

In Figl 8 We have shown amodified formation of. the intermediate section 10, Whereinthe ear piece 30a is formed as an integral part thereof, thereby dispensing with the employment of the outermost diaphragm 141.

ln Fig. 9 We have shown still another modified formation of the intermediate; section, wherein said outermost diaphragm 14 is dispensed with, the diaphragm 17 being madel conica-l in form, andexpanded in a direction the reverse tof the vtapered Wall 8 of the aperture 7 of the ear piecej, soas to convey vthe sound from substantiallyt-he entire-,available surface of the receiver dia- 4to-the central opening of the said ear piece 6 Without loss. A This construction is particularly desirable Vfor use since thechamber Within said. vconical diaphragm17 is am le to afford full genera'.- waves, and the conical form of the chamber insures conveyance of said waves to theear With=a minimum 'of loss.A The passage 30 lwith Wh'ch the iexible piece is be formed' from any tube communicates is herein shown as communicating with the space or chamber Within this conical diaphragm so that aproper proportion of the sound is conveyed therethrough tothe auxiliary ear piece Q7.

In connection with our improvements as above described, We provide means 'for supporting the hand telephone, so that when desired, both hands may be freely employed during use of the telephone. Such supporting means are shown in Figs. 1 and 2 and` comprise a clip 35 having two sets or 'pairs of spaced upturned fingers or projections 36, 37 between which the hand telephone, When removed from the hook lever is adapted to be securely heldwith its ear piece opposite the subscribers ear.

The clip 35 is adjustably supported upon the upper end of a toggle device 38, the

lower end of which has an 'adjustable con-` nection as shown at 39 with a clip Li() detachably held upon the pillar of the instruy ment, in such a manner that said toggle device may be lengthened and shortened by the movementof its members and maybe directed at any required inclination to the base of the instrument to permit the said clip at its upper end to retain 'the receiver in position opposite the subscribers ear during use of the transmitter. lVhen the togle device is not required for. use, it may be tolded up compactly at the base of the instrument so as to be out of' the way.

As'herein shown the clip t0 is provided also With afoot 41 adapted for contact with the surface whereon the base 2 of the instrument is supported in line with the toggle device 33 so as to prevent tipping` of the 'instrument when the weight of the receiver is supported uponthe extended toggle device during use.

Ars will be understood from the above description, the telephone constructed according to. our invention is of an extremely simple and comparatively inexpensive nature, and is particularly well adapted for use by reason of' the increased distinctness aiforded by itand of the convenience due to the possibility of freely employing one or both hands during use of the instrument, and it will also be evident that the device is susceptible of considerable modification Without material departure from the principles and spirit of the invention7 and for this reason we do not desire to b e understood as limiting ourselves to the precise tracted opening formation and arrangement of the Aseveral parts of thedevice herein set forth in carryr ing out our invention in practice.

Having thus described our invention, what we claim and desire to Secure by Letters Patent is l. A telephone receiver having a body portion provided with a sounding diaphragm, and .with a chamber adapted to receive the sound produced thereby, and an ear piece having a central aperture, said chamber-having at ,its side opposite to the diaphragm a central contracted opening affording communication with said aperture of the ear piece, and being provided with conical walls which converge in a substantially continuous manner from the outer part of the diaphragm to said central contracted opening, and are adapted todirect the sound produced by the diaphragm uto said central opening' of the ear piece.

2. A device of the character described having a body portion provided with a sounding diaphragm and with a chamber arranged to receive the sound produced by the diaphragm, an car piece having a central aperture, said chamber having a central contracted opening at its side opposite the diaphragm and affording communication with said aperture of the ear piece, and having conical walls which converge in a substantially continuous manner from the outer part of the diaphragm to said central conand are adapted to direct the sound produced by the diaphragm to said aperture of the ear piece and having a passage extended laterally to one side of the body'portion, a flexible tube having screw connection at the outer end of said passage and adapted for communication with said chamber of the 'body portion, and an ear piece carried uponthe end of said tube and having an inturned fiange produced at its upper part for supporting engagement with the ear, and provided with a passage communicating with said tube and adapted to convey the sound to the ear.

In witness whereof we have hereunto signed our names this 29th day of August 1,908, in the presence of two subscribing witnesses.

KATHERINE NICHOLQ. `ISAAC VY. NICHOLS. Witnesses:

J. S. CAPLINGER,

F; W. VV1MAN. 

